Bitcoin cannot be a bank huh ? that sounds weird previously I heard topics bitcoin valuation, Bitcoin as a store of value, and Bitcoins as a Global asset. and Bitcoin the freedom? Bitcoin the P2P digital payment system ? and Medium of exchange topics and even some of them are covered by me as well. keep it simple Bitcoin is the P2P medium of exchange. Hope so got it..
If you want to cover its attributes and future potential-like things then do something rather than this because Banks have nothing similar to Bitcoin, they are shady and centralized. They need KYC if they want to access all the financial services the Bitcoin all you need is a paper wallet and an internet connection rest to the things you know. As a Bddy above said "Be your Bank", follow it.
I think they're pointing out the idea that Bitcoin is hard money, and basically you cannot just create more Bitcoin out of thin air, which is what banks do these days.
In that regards, Bitcoin cannot be a bank, in the modern sense. Because you can't just loan it to someone else and add more Bitcoin from thin air to yourself.